# defalloc.h

    00001 // Backward-compat support -*- C++ -*-
    00002
    00003 // Copyright (C) 2001 Free Software Foundation, Inc.
    00004 //
    00005 // This file is part of the GNU ISO C++ Library.  This library is free
    00006 // software; you can redistribute it and/or modify it under the
    00007 // terms of the GNU General Public License as published by the
    00008 // Free Software Foundation; either version 2, or (at your option)
    00009 // any later version.
    00010
    00011 // This library is distributed in the hope that it will be useful,
    00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00014 // GNU General Public License for more details.
    00015
    00016 // You should have received a copy of the GNU General Public License along
    00017 // with this library; see the file COPYING.  If not, write to the Free
    00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
    00019 // USA.
    00020
    00021 // As a special exception, you may use this file as part of a free software
    00022 // library without restriction.  Specifically, if other files instantiate
    00023 // templates or use macros or inline functions from this file, or you compile
    00024 // this file and link it with other files to produce an executable, this
    00025 // file does not by itself cause the resulting executable to be covered by
    00026 // the GNU General Public License.  This exception does not however
    00027 // invalidate any other reasons why the executable file might be covered by
    00028 // the GNU General Public License.
    00029
    00030 /*
    00031  *
    00032  * Copyright (c) 1994
    00033  * Hewlett-Packard Company
    00034  *
    00035  * Permission to use, copy, modify, distribute and sell this software
    00036  * and its documentation for any purpose is hereby granted without fee,
    00037  * provided that the above copyright notice appear in all copies and
    00038  * that both that copyright notice and this permission notice appear
    00039  * in supporting documentation.  Hewlett-Packard Company makes no
    00040  * representations about the suitability of this software for any
    00041  * purpose.  It is provided "as is" without express or implied warranty.
    00042  *
    00043  */
    00044
    00045 // Inclusion of this file is DEPRECATED.  This is the original HP
    00046 // default allocator.  It is provided only for backward compatibility.
    00047 // This file WILL BE REMOVED in a future release.
    00048 //
    00049 // DO NOT USE THIS FILE unless you have an old container implementation
    00050 // that requires an allocator with the HP-style interface.
    00051 //
    00052 // Standard-conforming allocators have a very different interface.  The
    00053 // standard default allocator is declared in the header <memory>.
    00054
    00055 #ifndef _BACKWARD_DEFALLOC_H
    00056 #define _BACKWARD_DEFALLOC_H 1
    00057
    00058 #include "backward_warning.h"
    00059 #include "new.h"
    00060 #include <stddef.h>
    00061 #include <stdlib.h>
    00062 #include <limits.h>
    00063 #include "iostream.h"
    00064 #include "algobase.h"
    00065
    00066
    00067 template <class _Tp>
    00068 inline _Tp* allocate(ptrdiff_t __size, _Tp*) {
    00069     set_new_handler(0);
    00070     _Tp* __tmp = (_Tp*)(::operator new((size_t)(__size * sizeof(_Tp))));
    00071     if (__tmp == 0) {
    00072     cerr << "out of memory" << endl;
    00073     exit(1);
    00074     }
    00075     return __tmp;
    00076 }
    00077
    00078
    00079 template <class _Tp>
    00080 inline void deallocate(_Tp* __buffer) {
    00081     ::operator delete(__buffer);
    00082 }
    00083
    00084 template <class _Tp>
    00085 class allocator {
    00086 public:
    00087     typedef _Tp value_type;
    00088     typedef _Tp* pointer;
    00089     typedef const _Tp* const_pointer;
    00090     typedef _Tp& reference;
    00091     typedef const _Tp& const_reference;
    00092     typedef size_t size_type;
    00093     typedef ptrdiff_t difference_type;
    00094     pointer allocate(size_type __n) {
    00095     return ::allocate((difference_type)__n, (pointer)0);
    00096     }
    00097     void deallocate(pointer __p) { ::deallocate(__p); }
    00098     pointer address(reference __x) { return (pointer)&__x; }
    00099     const_pointer const_address(const_reference __x) {
    00100     return (const_pointer)&__x;
    00101     }
    00102     size_type init_page_size() {
    00103     return max(size_type(1), size_type(4096/sizeof(_Tp)));
    00104     }
    00105     size_type max_size() const {
    00106     return max(size_type(1), size_type(UINT_MAX/sizeof(_Tp)));
    00107     }
    00108 };
    00109
    00110 class allocator<void> {
    00111 public:
    00112     typedef void* pointer;
    00113 };
    00114
    00115
    00116
    00117 #endif /* _BACKWARD_DEFALLOC_H */